The JTAGICE mkII kit contains these items:
JTAGICE mkII unit with probe
USB cable (1.8m)
RS-232 serial cable
DC power supply cable
10-pin (JTAG) to 6-pin (SPI) probe adapter cable
10-wire multicolour custom connector cable ("squid")
Spare 30-lead flex cable
AVR Technical Library DVD
PDI adapter for XMEGA